diff --git a/internal/inst/ztable.go b/internal/inst/ztable.go
index a2cdba9..afdfb28 100644
--- a/internal/inst/ztable.go
+++ b/internal/inst/ztable.go
@@ -6343,6 +6343,34 @@ var Instructions = []Instruction{
 					{Type: "m64", Action: 0x2},
 				},
 			},
+			{
+				ISA: []string{"SSE2"},
+				Operands: []Operand{
+					{Type: "xmm", Action: 0x1},
+					{Type: "r32", Action: 0x2},
+				},
+			},
+			{
+				ISA: []string{"SSE2"},
+				Operands: []Operand{
+					{Type: "r32", Action: 0x1},
+					{Type: "xmm", Action: 0x2},
+				},
+			},
+			{
+				ISA: []string{"SSE2"},
+				Operands: []Operand{
+					{Type: "m32", Action: 0x1},
+					{Type: "xmm", Action: 0x2},
+				},
+			},
+			{
+				ISA: []string{"SSE2"},
+				Operands: []Operand{
+					{Type: "xmm", Action: 0x1},
+					{Type: "m32", Action: 0x2},
+				},
+			},
 		},
 	},
 	{
diff --git a/tests/fixedbugs/issue50/issue50.s b/tests/fixedbugs/issue50/issue50.s
index e69de29..39083e5 100644
--- a/tests/fixedbugs/issue50/issue50.s
+++ b/tests/fixedbugs/issue50/issue50.s
@@ -0,0 +1,10 @@
+// Code generated by command: go run asm.go -out issue50.s -stubs stub.go. DO NOT EDIT.
+
+#include "textflag.h"
+
+// func Issue50(x uint32) uint32
+TEXT ·Issue50(SB), NOSPLIT, $0-12
+	MOVL x+0(FP), AX
+	MOVQ AX, X0
+	MOVQ X0, ret+8(FP)
+	RET
diff --git a/tests/fixedbugs/issue50/stub.go b/tests/fixedbugs/issue50/stub.go
index e69de29..8709aba 100644
--- a/tests/fixedbugs/issue50/stub.go
+++ b/tests/fixedbugs/issue50/stub.go
@@ -0,0 +1,7 @@
+// Code generated by command: go run asm.go -out issue50.s -stubs stub.go. DO NOT EDIT.
+
+package issue50
+
+// Issue50 reported that MOVD/MOVQ was missing the r32, xmm form.
+// This function deliberately exercises this instruction form.
+func Issue50(x uint32) uint32